I just formatted my NWHD3 and reinstalled SSv4.2 on my computers. I rebuilt my library in SS from scratch. I imported about 48 gig of music to my HDD and then into SS. I converted all tracks to ATRAC at 48kbps and then transferred them to my -HD3. All went well, the tracks play back fine but when I connected the walkman back upto the computer to add a few more tracks I get this pop up: